mpc doesn't like mpc add from script?? Strange issue

richymartin · 2015-04-27 11:48:11

Hi All,

I've been scratching my head for a few days now, basically I have a script to grab the http stream link from a file, and output the result to 'mpc add'. It doesn't work! It only seems to work if the actual http link is in the initial command, not a grep.

#################################################
This works;
$:mpc add http://bbcmedia.ic.llnwd.net/stream/bbc … 3f5f3f9f66
#################################################
This doesn't works;
$:mpc add `grep -i "$1.*, "/var/local/bbc_radio/urls | head -1 | cut -d',' -f2`

$:mpc play
volume: 80% repeat: off random: off single: off consume: off
ERROR: problems decoding "http://bbcmedia.ic.llnwd.net/stream/bbc … be8fed94bb"16753f5f3f9f66

To prove the grep actually works;
$:echo `grep -i "$1.*, " /var/local/bbc_radio/urls | head -1 | cut -d',' -f2`
$:http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio1_mf_p?s=1430119633&e=1430134033&h=25b6424be8fed94bb816753f5f3f9f66

Tried it another way, still doesn't work!
$:site=`grep -i "$1.*, " /var/local/bbc_radio/urls | head -1 | cut -d',' -f2` ; sudo mpc add $site
$:mpc play
volume: 80% repeat: off random: off single: off consume: off
ERROR: problems decoding "http://bbcmedia.ic.llnwd.net/stream/bbc … be8fed94bb"16753f5f3f9f66

I feel like I've missed something really obvious here any help would be much appreciated!

Thanks

Richy

Mercader1902 · 2015-04-27 12:15:13

richymartin wrote:

#################################################
This works;
$:mpc add http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio1_mf_p?s=1430119633&e=1430134033&h=25b6424be8fed94       bb816    753f5f3f9f66
#################################################

$:mpc play
volume: 80%   repeat: off   random: off   single: off   consume: off
ERROR: problems decoding "http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio1_mf_p?s=1430119633&e=1430134033&h=25b6424be8fed94     bb"16       753f5f3f9f66

There is a missed number (a 8, after the quote marks).

Don't forget to use the code tags.

Last edited by Mercader1902 (2015-04-27 12:16:10)

richymartin · 2015-04-27 12:23:50

Sorry i think that's just the way it was truncated on my terminal window when it was resized.... full output below;

~ $ echo `grep -i "$1.*, " /var/local/bbc_radio/urls | head -1 | cut -d',' -f2`
http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio1_mf_p?s=1430119633&e=1430134033&h=25b6424be8fed94bb816753f5f3f9f66

~ $ mpc add `grep -i "$1.*, " /var/local/bbc_radio/urls | head -1 | cut -d',' -f2`

~ $ mpc play
volume: 80%   repeat: off   random: off   single: off   consume: off
"RROR: problems decoding "http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio1_mf_p?s=1430119633&e=1430134033&h=25b6424be8fed94bb816753f5f3f9f66

Last edited by richymartin (2015-04-27 12:49:21)

Mercader1902 · 2015-04-27 14:02:48

It works for me, it's really weird...

~/Pruebas   
$ mpc add  `grep -i "$1.*, " /home/ruben/Pruebas/urls | head -1 | cut -d',' -f2`           16:00
 ~/Pruebas   
$ mpc play                                                                                 16:00
bbc_radio_one
[playing] #1/7   0:00/0:00 (0%)
volume:  0%   repeat: off   random: off   single: off   consume: off

richymartin · 2015-04-27 14:12:25

That's so strange.... What's your MPD version?

Mercader1902 · 2015-04-27 14:14:38

Music Player Daemon 0.19.9 and mpc 0.26-1.

ewaller · 2015-04-27 14:30:33

Are you both using the same shell? (Bash vs zsh)
What if you try using $(...) instead of `...`

Mercader1902 · 2015-04-27 15:30:39

I use zsh but with bash it works for me too:

~   
$ bash                                                                                                                                         16:54
[ruben@filemon ~]$  mpc add  `grep -i "$1.*, " /home/ruben/Pruebas/urls | head -1 | cut -d',' -f2`
[ruben@filemon ~]$ mpc play
bbc_radio_one
[playing] #1/10   0:00/0:00 (0%)
volume:  0%   repeat: off   random: off   single: off   consume: off

richymartin · 2015-04-27 21:00:50

ewaller wrote:

Are you both using the same shell? (Bash vs zsh)
What if you try using $(...) instead of `...`

I even just rebuilt arch and had the same problem.... however using $(..) instead of '...' works fine??!?! Which is brilliant, thank you... but why does that work? whats the difference?

Thank you both for your efforts...

richymartin · 2015-04-27 21:04:25

oh it doesn't

[root@alarmpi ~]# mpc add $(grep -i "$1.*, " /var/local/bbc_radio/urls | head -1 | cut -d',' -f2)
[root@alarmpi ~]# mpc play 1
http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio1_mf_p?s=1430161173&e=1430175573&h=3c65c41ba0303373e746b8d870c9668b
[playing] #1/1   0:00/0:00 (0%)
volume: 96%   repeat: off   random: off   single: off   consume: off
[root@alarmpi ~]# mpc status
volume: 96%   repeat: off   random: off   single: off   consume: off
ERROR: Failed to decode http://bbcmedia.ic.llnwd.net/stream/bbcmedia_radio1_mf_ps=1430161173&e=1430175573&h=3c65c41ba0303373e746b8d870c9668b
[root@alarmpi ~]#

Arch Linux

#1 2015-04-27 11:48:11

mpc doesn't like mpc add from script?? Strange issue

#2 2015-04-27 12:15:13

Re: mpc doesn't like mpc add from script?? Strange issue

#3 2015-04-27 12:23:50

Re: mpc doesn't like mpc add from script?? Strange issue

#4 2015-04-27 14:02:48

Re: mpc doesn't like mpc add from script?? Strange issue

#5 2015-04-27 14:12:25

Re: mpc doesn't like mpc add from script?? Strange issue

#6 2015-04-27 14:14:38

Re: mpc doesn't like mpc add from script?? Strange issue

#7 2015-04-27 14:30:33

Re: mpc doesn't like mpc add from script?? Strange issue

#8 2015-04-27 15:30:39

Re: mpc doesn't like mpc add from script?? Strange issue

#9 2015-04-27 21:00:50

Re: mpc doesn't like mpc add from script?? Strange issue

#10 2015-04-27 21:04:25

Re: mpc doesn't like mpc add from script?? Strange issue

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